Use and interpretation of on/off diaries in Parkinson's disease.
D000203:Activities of Daily Living; D000368:Aged; D003625:Data Collection / Q000379:methods*; D018450:Disease Progression; D005260:Female; D017408:Guidelines as Topic; D006801:Humans; D008297:Male; D008499:Medical Records; D008875:Middle Aged; D010300:Parkinson Disease / Q000473:pathology*; D010507:Periodicity; D011379:Prognosis; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires